Brief description about the 6 layer pcb: 1.FR4,6 layer pcb,1.6mm,1OZ 2.17 years ... Teflon4Board Thickness0.1mm-3.5mm5Thickness of copper foil for the basis materials18um(1/2OZ),36um(1OZ),72um(2OZ)6The ... finished products:18-25um4.Thickness for hard gold gild the golden finger:0.05um 0.075um 0.100um ... pease send the files to me, then i will send the all files with attachment to you 6-layer pcb with ...